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Prediction of surface movement with emphasis on horizontal deformation due to mining
By Mao Bai
In predicting the integrity of under-mined structures, surface horizontal displacements and curvatures are frequently of greater importance than the more homogeneous vertical displacements. Accurate e
Jan 1, 1989
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Cost Preventive System To Control Unstable Roof In Main Line Haulage Entries
By John Popovich
The MICON RokLok binder system including component and consolidation processes and safety and its first aide are described. The implementation procedures and selection of injection parameters are disc
Jan 1, 2001
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Microcomputer Simulation of Rock Blasting to Predict Fragmentation (e1b89d1b-bf88-4e3c-9f38-0d3739330b7a)
By C. Dinis da Cama
In order to reduce the complexity of mechanisms influencing rock- fragmentation by blasting a simulation approach is proposed, using the capabilities of micro-computer interactive graphics. Situat
Jan 1, 1984
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Innovative Secondary Support Technologies For Western Mines
By Thomas M. Barczak
With the development of the shield support, the primary requirement for successful ground control in longwall mining is to provide stable gate road and bleeder entries. Wood cribbing has been the domi
Jan 1, 1996
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Subsidence prediction using a laminated linear model
By Miklos D. G. Salamon
If all stratifications are horizontal, the computation of surface deformation induced by coal mining involves the prediction of roof and floor convergence and then the transfer of the effects of this
Jan 1, 1989
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Coal Pillar Strength Based On The Ground Reaction Curve - A New Approach
By Kazem Oraee
In underground coal mining, particularly room-and-pillar methods, the coal pillars play a significant role in roof stability. If the pillar dimensions are increased, the pillar bearing capacity also i
Jan 1, 2009
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Technique To Measure Resultant Load Vector On Shield Supports (b937ef33-c51b-4de4-a956-dc8be749fea8)
By Thomas M. Barczak
The resultant load vector is the representation of the forces applied to a longwall roof support element by caving strata into a single, quantifiable measure of support resistance. The relatively comp
Jan 1, 1984
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Upgraded Comprehensive and Integrated Subsidence Prediction Model CISPM - W
By Yi Luo
In dealing with various subsidence cases, accurate predictions of mining induced subsidence are the basis for correct assessment of subsidence influences and subsequent mitigation efforts. There is a
Jan 1, 2008
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An Applications Approach To Barrier Pillar Design For Improved Resource Recovery
By John R. Koehler
Available barrier pillar design methods do not adequately account for overburden caving characteristics, the timing and magnitude of associated load transfers, the occurrence of unusual geologic featu
Jan 1, 1989
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Stress Variation on Longwall Powered Supports in Upper Seam due to the Presence of Old Mined Out Workings in Lower Seam
By Vedala Sastry
Longwall mining for coal extraction in deeper deposits is gaining momentum in India, due to the increasing stripping ratios and depletion of shallow deposits amenable for surface mining. In longwall
Jan 1, 2007
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Drainage Of Water From Abandoned Mines By Horizontal Drilling
By Alan J. Zeni
Drainage of water from abandoned underground mines has become important in recent years because of safety concerns when mining near abandoned works or reentering abandoned mines for further developmen
Jan 1, 1990
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Effects Of Subsidence On Steep Topography And Cliff Lines
By Don Kay
A two year study into the effects of coal mining induced subsidence on cliff lines was undertaken by the Department of Mineral Resources with the support of a grant under the National Energy Research,
Jan 1, 1992
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Probabilistic Analysis of Blasting Impact on Open Pit Stability (95ce6127-68ed-453f-9268-476a1af1dd45)
By Dae S. Young
A new probabilistic approach is introduced for slope stability analysis including adverse impact of blasting vibrations. The material strength within a slope area is randomized in this bi-variate join
Jan 1, 1984
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Ground Control and the Inundation of the Retsof Mine
By Vincent A. Scovazzo
On March 12, 1994, the 1,100-foot deep 2 Yard South panel of the 1l0 year-old Retsof Mine collapsed. At the time of this occurrence, the Retsof Mine was characterized as the world's largest, most
Jan 1, 1997
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Support selection of mine roadways by means of a computer program
By Erdal Ünal
The computer program introduced in this paper is based on design guidelines developed for selection of support systems used in mine roadways. The support types considered include rock bolts as well as
Jan 1, 1989
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Theoretical analysis of breaking strength of mine pillars and test specimens
By D. S. Choi
This paper presents a theoretical analysis of the effect of shape and size on strength of geologic materials. The results indicate that the shape effect is caused by the development of confining press
Jan 1, 1989
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Hydraulic stowing - A solution for subsidence due to underground mining in the USA
By Kausik M. Sinha
Hydraulic stowing, which is being practiced in several major coal producing countries to deal with adverse mining conditions, usually permits almost 100% coal recovery from underground mines with mini
Jan 1, 1989
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Rib Support Innovation At Daw Mill Colliery (a22a0861-1502-4d3d-a2cd-8a6ba0c13271)
By Jon Bowler
Daw Mill Colliery, UK Coal, near Coventry in England, mines the Warwickshire Thick Seam at 800 m/2500 ft depth using longwall retreat with gateroads supported by rockbolts. Over the last eight years
Jan 1, 2009
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Field Test Results On Dyna-Rok And Dyna-Rok Plus Anchors
By James J. Scott
Research and development has been carried out on the patented Dynamic Rock Anchor, tradenamed DYNA-ROK and DYNA-ROK PLUS Anchors, which are manufactured and marketed by Ingersoll-Rand Company. This pa
Jan 1, 1990
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Numerical Modelling of the Range of Rock Fracture Zone Around Gateroads on the Basis of Underground Measurement Results (edbcb7c0-6a88-4056-904b-d121adf0097c)
By Andrzej Walentek
This paper presents the results of numerical modeling of the fractured zone around longwall gateroads. The numerical computations have been based on the results of underground measurements of the frac
Jan 1, 2009